Nugraha, Andrias Suhendra, Paulus Pramono Rahardjo, and Imam Achmad Sadisun. “Comparison of the Number of Compactor Passes and the Constrained Modulus of a Compacted Volcanic Soil”. Journal of Mechanical, Civil and Industrial Engineering 4, no. 1 (February 13, 2023): 17–27. Accessed October 6, 2025. https://al-kindipublishers.org/index.php/jmcie/article/view/4864.